摘要
以硝酸铋[Bi(NO3)3·5H2O]和钨酸钠(Na2WO4·2H2O)为原料,采用十六烷基三甲基溴化铵(CTAB)辅助水热法成功合成了B2WO6晶体,并用XRD、SEM、IR、Raman、UV-vis分光光度计对样品进行了表征。测试结果表明,样品呈圆饼状形貌,属于正交晶系B2WO6晶体,平均晶粒尺寸约89.5 nm。样品可见光降解罗丹明溶液(1×10-5 mol/L)表现为准一级反应,其反应速率常数为0.03111 min-1,光照60 min时的光降解率可达91.6%。
Using Bi（ NO3 ）3·5H2O and Na2WO4·2H2O as raw materials, cake-like Bi2WO6 microcystals were synthesized via a CTAB-assisted hydrothermal process. The as-prepared products were characterized by XRD,SEM,IR,Raman and UV-vis. The results reveal that the samples possess the shape of cake and belong to orthorhombic structure Bi2WO6 with an average grain size of 89.5 nm. Bi2WOs microcake exhibit the pseudo first order kinetics for photodegradating rhodamine B （RhB） solution （1×10^-5 mol/L） ,and its photodegradation rate constant k is 0. 03111 min-1. A good photocatalytic activity is found with a 91.6 % degradation of RhB under visible-light irradiation for 60 min.
出处
《惠州学院学报》
2013年第6期5-11,共7页
Journal of Huizhou University
基金
广东省高等学校人才项目[(粤财教2012)41
2050205]
广东省自然科学基金项目(S2012010009632)
惠州市科技项目(2012P09)
惠州学院优秀人才资助项目
关键词
水热合成
圆饼Bi2WO6晶体
罗丹明B
光催化性能
Hydrothermal synthesis
cake-like Bi2 WO6 crystal
rhodamine B
photocatalytic properties
